Biocatalytic approaches for a more sustainable synthesis of sandalwood fragrances
作者:Maria C. Cancellieri、Davide Maggioni、Lorenzo Di Maio、Daniele Fiorito、Elisabetta Brenna、Fabio Parmeggiani、Francesco G. Gatti
DOI:10.1039/d4gc00746h
日期:——
most critical step of their preparation is the reduction of α,β-unsaturated carbonyl precursors while preserving the campholenic unsaturation. Classical reductions, especially hydrogenations, often lack complete chemoselectivity, leading to the formation of over-reduced byproducts. In addition, the stereochemistry plays a key role in the olfactory perception of these chiral fragrances. However, none
龙脑香基香料的合成需要保留特定的结构元素,以捕捉所需的檀香香味。其制备过程中最关键的步骤是还原 α,β-不饱和羰基前体,同时保留龙脑烯不饱和度。经典的还原反应,尤其是氢化反应,通常缺乏完全的化学选择性,导致过度还原副产物的形成。此外,立体化学在这些手性香料的嗅觉中起着关键作用。然而,目前的工业合成都不是立体选择性的,导致非贡献异构体的浪费。在此,我们探索了使用烯还原酶 (ER) 和醇脱氢酶 (ADH) 进行生物催化还原的未开发潜力,以增强四种商用檀香香料(Brahmanol®、Firsantol®、Sandalore® 和 Ebanol®)的可持续性,重点关注立体选择性合成其最具气味的异构体。比较了生物减排和化学减排之间的绿色指标,包括 E 因素和 EcoScale。